Yesterday, Tesla CEO Elon Musk said that Tesla was planning to start pushing its software update to start bringing Autopilot 2.0 cars to parity with the first generation Autopilot today and he sort of stayed true to the commitment. Tesla started pushing the update to the first 1,000 cars in its fleet, but it’s not exactly to parity with Tesla’s first generation Autopilot.

According to Tesla, the update includes the Autopilot’s Traffic Aware Cruise Control feature, Forward Collision Warning, and Autosteer, which is the flagship feature of the Autopilot, but it will only be enabled at “low-speed”, someone familiar with the update told Electrek.

It will only be available on highways with clear markings. The company aims primarily for Tesla owners with Autopilot 2.0 hardware to use the feature in traffic jam conditions under 35 mph.

While the current feature can be enabled on undivided roads and on highways with a top speed of 90 mph, Tesla’s software team has to adapt the safety feature to the company’s new in-house vision system (Tesla Vision), and its machine-learning technology with data collected from its fleet.

It aims for complete parity to happen in “early 2017” as it adapts the technology to the new hardware suit.

From there, Tesla will be able to improve the feature and transition to the ‘Autosteer+’ feature of the second generation Autopilot. The improvements will happen every few months.

HW2 Autopilot software uploading to 1000 cars this eve. Will then hold to verify no field issues and upload to rest of fleet next week.

As Elon Musk commented on Twitter today, the update is only being pushed to the first 1,000 cars today. If everything goes well, more vehicles will receive the update next week.

A source familiar with the update told Electrek that Tesla is being exceptionally cautious with the update and that even though “a small number of vehicles worldwide” are currently using the full Autosteer feature without restriction with the new Autopilot hardware, the company is being careful since it’s using the new hardware suite.

Every owner should get the complete features within the next few weeks.